KEYSTONE INT has a total of 600 patent applications. Its first patent ever was published in 1971. It filed its patents most often in United States, Australia and EPO (European Patent Office). Its main competitors in its focus markets mechanical elements, machines and measurement are MILWAUKEE FAUCETS, ANA LIDIETH MADRIGAL CHAVARRIA and FORSAC VALVES.
# | Country | Total Patents | |
---|---|---|---|
#1 | United States | 100 | |
#2 | Australia | 59 | |
#3 | EPO (European Patent Office) | 54 | |
#4 | Brazil | 45 | |
#5 | Canada | 41 | |
#6 | WIPO (World Intellectual Property Organization) | 35 | |
#7 | Japan | 31 | |
#8 | Mexico | 28 | |
#9 | United Kingdom | 25 | |
#10 | Norway | 21 | |
#11 | New Zealand | 15 | |
#12 | Finland | 14 | |
#13 | Germany | 13 | |
#14 | Republic of Korea | 13 | |
#15 | Spain | 12 | |
#16 | Netherlands | 12 | |
#17 | France | 11 | |
#18 | Hungary | 9 | |
#19 | Philippines | 8 | |
#20 | Italy | 7 | |
#21 | Sweden | 7 | |
#22 | South Africa | 7 | |
#23 | China | 6 | |
#24 | Argentina | 5 | |
#25 | Czechia | 5 | |
#26 | Poland | 5 | |
#27 | Denmark | 4 | |
#28 | Slovakia | 3 | |
#29 | India | 2 | |
#30 | Singapore | 2 | |
#31 | Ireland | 1 |
# | Industry | |
---|---|---|
#1 | Mechanical elements | |
#2 | Machines | |
#3 | Measurement | |
#4 | Engines, pumps and turbines |
# | Technology | |
---|---|---|
#1 | Venting or aerating devices | |
#2 | Unspecified technologies | |
#3 | Unspecified technologies | |
#4 | Non-positive-displacement pumps | |
#5 | Pipes | |
#6 | Servomotors | |
#7 | Measuring volume | |
#8 | Nails | |
#9 | Pistons and sealings | |
#10 | Measuring force, work and fluid pressure |
# | Name | Total Patents |
---|---|---|
#1 | Scobie William Bryce | 79 |
#2 | Kueffer Max | 43 |
#3 | Yohner Paul Anthony | 31 |
#4 | Scobie William B | 31 |
#5 | Mcneely Michael D | 24 |
#6 | Maxwell Horace J | 23 |
#7 | Killian Henry R | 20 |
#8 | Holtgraver Edward George | 18 |
#9 | Feiss Roy L | 18 |
#10 | Chou Alan F | 16 |
Publication | Filing date | Title |
---|---|---|
AU6892798A | Self-contained steam trap monitor | |
AU2755297A | Method and apparatus for monitoring recirculation control system performance | |
US5823228A | Valve manifold | |
WO9721051A1 | Rotary valve with pressure energized seal | |
US5590684A | Dual pilot manifold assembly for a safety relief valve | |
NZ272302A | Pneumatic valve actuator; details regarding means for supplying fluid pressure to the actuator cylinder | |
SG30348A1 | Rotary valve position indicator and method | |
SG32334A1 | Adjustable magnet carrier for valve position indicator | |
AU2237895A | Adjustable magnet carrier for a valve position indicator | |
US5549131A | Automatic recirculation valve | |
US5579800A | Rotary valve position indicator and method | |
US5388806A | Valve assembly having improved valve seat | |
US5427354A | Valve assembly | |
US5494071A | Mounting system for pressure transmitters | |
US5469805A | High visibility valve position indicator | |
US5439619A | Steam conditioning butterfly valve | |
US5313976A | Top entry ball valve and method of assembly | |
NL9301162A | Seal for valve shaft. | |
US5307831A | Safety relief valve for pressure vessels | |
US5333638A | Automatic recirculation valve |